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Ujwal Shyam Kantimohanthy
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← All selected workReviewed 12 Nov 2026
Completed · Hackathon prototypeBehavioral banking loyalty prototype · Adria Hack Sarajevo 2026

G-Core

A prototype that rewards financial consistency measured against a customer's own history instead of spending volume. It scores five weighted habits with plain rules, protects unavoidable health costs, and ignores transfers that only move money between a person's own accounts.

Organisation
Team EMPTY · Adria Hack Sarajevo 2026 (24-hour hackathon)
Role
Team member and repository owner
Timeline / Repo
Sep 2026

Traceroute path · 5 hops

Each hop isolates problem, constraints, architecture decisions, verification artifacts, and limits.

    • G-Core asks whether consistency, measured against a customer's own last three months, can work as a loyalty signal.
    • The repository states plainly that this is a hackathon prototype and not an empirical claim about existing loyalty models.
    Next hop follows below
    • Scoring is deterministic rather than machine learning, because there was no labelled data to train or validate a model responsibly.
    • Raw transactions stay on the bank side; only a pseudonymous ID, points, tier and eligibility flags reach the loyalty layer.
    Next hop follows below
    • Weights: budget discipline 30%, payment consistency 25%, savings consistency 20%, liquidity resilience 15%, goal consistency 10%. The repository labels these as design parameters, not calibrated coefficients.
    • A protected-expense rule keeps a health cost out of discretionary scoring, so an emergency does not cost the customer their streak.
    • An anti-gaming rule finds a transfer out and a matching transfer back between the customer's own accounts and excludes both from savings progress.
    Next hop follows below
    • The screenshots below come from the demo, which uses a made-up customer and a made-up bank.
    • The repository lists a GitHub Pages demo; I could not open it from my checking environment, so confirm it loads before sharing the link.
    G-Core overview screen showing a monthly behavioural plan with budget, overdraft, balance and savings goals beside a tier ladder
    Monthly plan and tier ladder, computed from the customer's own last three months (demo data).
    G-Core screen with a green banner saying a protected 450 euro healthcare expense was detected and excluded from evaluation
    A protected healthcare expense is excluded, so the streak is unaffected.
    G-Core activity screen with a banner saying an internal 500 euro transfer between own accounts was detected and excluded
    An internal transfer between the customer's own accounts is detected and excluded.
    GitHub: Team-Empty-Sarajevo-Hackathon
    Next hop follows below
    • Not a credit score and not validated across customer groups; the weights are untested design choices.
    • A production version would need open-banking connectors, authentication, key management, a privacy impact assessment and a fairness review.